Macroscopic biaxiality and electric-field–induced rotation of the minor director in the nematic phase of a bent-core liquid crystalMamatha Nagaraj, K. Merkel, J. K. Vij and A. KocotEPL, 91 6 (2010) 66002DOI: https://doi.org/10.1209/0295-5075/91/66002